this pic is inbetween what i’ve been talking about. Solid drawing and good anatomy, I would fix the curve of his body, the bottom of his back and his hips shouldn’t have the indention in this pose, round that off and it will flow better
I’d have to agree with Deonysios on the curve of the spine. try putting a light bone structure to see what’s happening in the pose. also, it might just be me, but the hand in back is too big. I feel like it wants to pop out like the hand in front. other than that, its a very solid drawing. good job.